CAT Bypass turning blue

[speedfrk]

Today when I parked my Rocket I noticed that my CAT bypass pipe has turned blue on both sides. When it was installed and before tuning the pipe had either a high polish, or a chrome finish. Is there anything to be concerned about? The header pipes have no discoloration. I'm thinking this is normal due to the header pipes looking normal. If they were blue I'd start thinking I'm still running too lean. Any thoughts?

 

[Power-Tripp]

This is normal heat induced coloration.

 

[speedfrk]

What I really meant to say is the beginning of my tail pipes in the u-bend. I figured it was probably normal, but with my history with this bike since going away from stock I'm paranoid about everything. I mean I just get all my tuning issues resolved and on the first ride to work after bringing it home from the dyno I get a pin hole leak in the upper radiator hose. I'm hoping I've exercised all the demons for a good long while. Thank you Wayne.

 

[breeze]

gremlin bell comes to mind